Hinge



July 19, 1927.

- 1,636,529 H. H. MOTSCHMAN HINGE Filed Aug. 17, 1925 122M571 dz!Patented July 19, 1927.

STATES PATENT oFFioE.

HENRY H;. MO.TSCHMAN, OF CHICAGO, ILLINOIS, ASSIGNQR TO UNION BED ANDSPRING COMPANY, OF CHICAGQILLINOIS, A CORPORATION OF'ILLINOIS.

amen;

Application filed August 17, 1925. 'S'eriaI-No. 50,561.

My present inventionconcerns certain features of'novelty and improvement1n..h1nge constructions, such as those used' in folding beds, etc., butthe new structure is capable of advantageous employment in manydifferent relations:

One object of the invention is the production of a hinge which has largebearing surfaces for two relatively-movable elements and withoutdepending for such surfaces on a hinge-pin or its equivalent.

A further aim of the invention is the provision of a hinge structure ofthis character employing hollow elements rockingly associated with oneanother in such a way that the hinge remains closed at all times andhence excludes the entrance of foreign matter to the hinge parts andgives the construction a neat and pleasing appearance under allcircumstances.

In order to enable those trained in this art to fully understand thisinvention both from structural and functional standpoints, in theaccompanying drawing forming apart of this specification, I haveillustrated a present desirable and preferred embodiment of theinvention and throughoutthe several views in this drawing like referencecharacters have been employed to designate the same parts.

In this drawing:

Figure 1 is an elevation of the improved hinge structure;

Figure 2 is a vertical section on an enlarged scale, showing the partsin a different relation; and

Figure 3 is a fragmentary section on an enlarged scale on line 3-3 ofFigure 1, the parts being viewed in the direction inclicated by thearrows.

Referring to the plurality of views of the drawing, it will be seen thatthe one hollow, male hinge-member, designated as a whole 11, square incross-section, has a shorter side wall 12 equipped with a narrow,inturned flange 13 along its lower edge, the opposite wall 14 beinglonger and not supplied with such a flange. p

The two side walls 15, 15, connecting the two walls 12 and 14, areoffset inwardly slightly, approximately the thickness of the metal ofwhich the parts are made, along the curved lines 16, 16, the lower edgesof such walls being curved at 17, and joining the inner edge of theflange 13 with the bottom edge of wall 14.

Such inwardly-deflectedsections of; the two walls are each shaped toform an. 0l1tstanding, hollow, circular rib 18 whiclrinwardly of,thestructure. presents, a corresponding, annular groove or recess 19.

The complementary, hollow, female hingemember, characterized as a whole21, has a longer wall 22 supplied at its end with an inwardly-disposedflange 23 of substantially the same width as the coordinate flange 13.

The opposite wall 24 is cut off at 25 and the two, side, connectingwalls 26, 26 are cut off for short distance at 27 in register with theedge 25, as is clearly depicted in Figure 2, and they have a curved edge28 joining the inner end of each margin 27 with the inner edge of thecorrelated flange 23.

The two terminal ears of the opposed walls 26, 26 are each pressed orformed to provide an internal, annular channel 29 to receive thecorresponding rib 18 with exactitude, the outer face of each such wallshowing the complementary circular rib 31.

Hence the female hinge-member provides proper seats for the ribs of themale hingemember so that the two parts 11 and 21 may turn on one anotheron these ample bearing surfaces.

An insert or cover member 32 has a wall 34 secured, as by welding,brazing or the like, to the inner face of the wall 14 and from thisprojects a pair of arms 35, 35 apertured at 36 in register and in alinement with like-sized holes 37 and 38 in the overlapping parts of thehinge-members and concentric with their circular hinge features.

These six, registering holes accommodate a rivet 39 with oppositeexternal heads or enlargements 4:1 and 4:2 permanently holding the partsof the hinge construction in correct assembled relation, but notconstituting the usual hinge-pin whose function in this instance islargely performed by the interfitting, round ribs and complementalsockets.

Element 32 has a curved wall 43 extending from the edge of wall 34 andterminating in a flange 44 adapted, in the relation or position of theparts illustrated in Figure 2, to overlie the companion flange 13, suchpart 43 comprising a cover or closure for the space which wouldotherwise occur between the two hinge-members, whereby ta prevent theentrance of dirt and other foreign matter which, in time, would tend toprevent a free and easy turning or rocking action of the hingestructure.

Many minor mechanical changes or modifications may be incorporated inthe appliance illustrated and described without loss of its materialattendant benefits and advantages and still come within the purview ofthe invention as defined by the following claim.

I claim:

In a hinge construction of the character described, the combination of ahollow hinge-member having a pair of spaced internal registering annulargrooves, the Walls of said member having apertures therethrough acomplementary hinge-member having a pair of spaced external registeringannular ribs in said grooves, the walls of said second hinge-memberhaving apertures therethrough concentric with said ribs, a cover-platecon centric with said grooves and ribs and having parts ap-ertured inregister with said other apertures, and means to maintain saidhinge-members in assembled relation and eX- tended through the aperturesof both hingemembers and those of said cover-plate parts.

In witness whereof I have hereunto set my hand.

HENRY H. MOTSOHMAN.

